Home / 9,327.28-12,871.65-5,135.50

Finding the Fourth Proportional to 9,327.28, 12,871.65 and 5,135.50

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Solution

The fourth proportional to 9,327.28, 12,871.65 and 5,135.50 is: 7,086.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,327.28 : 12,871.65 = 5,135.50 : x
  2. Step 2: Convert to fraction form
    9,327.28/12,871.65 = 5,135.50/x
  3. Step 3: Cross multiply
    9,327.28x = 12,871.65 × 5,135.50
  4. Step 4: Simplify right side
    9,327.28x = 66,102,358.58
  5. Step 5: Solve for x
    x = 66,102,358.58/9,327.28
  6. Step 6: Final answer
    x = 7,086.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.